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Internal Adaptations

Clownfish can change genders, male seahorses carry their young, and some snakes have remnants of leg bones-but why? Discover how significant evolutionary changes inside these creatures have equipped them for survival.

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  • Originally Aired November 15, 2015
  • Runtime 25 minutes
  • Content Rating United States of America TV-G
  • Network Smithsonian Channel
  • On Other Sites IMDB
  • Created July 15, 2018 by
    Administrator admin
  • Modified July 15, 2018 by
    Administrator admin